SF120AR0
3/4" Stainless Steel Constant Section Bearings
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Part No.
Part No.
SF120AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Stainless Steel
Construction
Single Row
Weight
5.2 lbs
Tolerance class
ABEC-1
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12"
Bore diameter tolerance
-0.0014"– 0"
Outside diameter
13.5"
Outside diameter tolerance
-0.0014"– 0"
Width
0.75"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
12.555"
Outer Ring Dimensions
Outer ring large-side face inner diameter
13.104"
Outer ring small-side face inner diameter
12.945"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
6487 lbf
Radial static load rating
17100 lbf
Axial static load rating
16290 lbf
Static load moment
49380 lbf
Lubrication
Lubricated
Radial internal clearance
0.0000 – 0.0005"
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Brass
Environment & Compliance
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 585.98
/ each
In Stock
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SF120AR0 Bearing Product Overview & Core Advantages
The SF120AR0 is a high-performance thin section angular contact ball bearing engineered for applications requiring exceptional precision and reliability. Manufactured from corrosion-resistant stainless steel, this single-row bearing is designed to handle significant combined loads, including high thrust loads in one direction, thanks to its specified 30° contact angle. Its Reali-Slim cross-section offers a compact and lightweight design, maximizing performance in space-constrained assemblies while providing high rigidity and operational accuracy suitable for ABEC-1 tolerance class applications.
SF120AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SF120 | Indicates the specific thin section bearing series with a 12" bore diameter and 13.5" outside diameter. |
| A | Signifies the 30° contact angle, optimized for handling high axial loads. |
| R0 | Denotes the standard radial internal clearance group (0.0000" – 0.0005"). |
| (Construction) | Open seal type, indicating no integral seals or shields, allowing for custom lubrication schemes. |
SF120AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row design with a 30° contact angle and stainless steel construction provides high rigidity, enabling the bearing to support substantial combined radial and axial loads (Radial Dynamic: 6487 lbf, Axial Static: 16290 lbf).
- Precision Performance: Manufactured to ABEC-1 precision tolerances with tight bore and OD tolerances, ensuring smooth, precise operation and minimal runout in demanding applications.
- Corrosion Resistance & Durability: The use of stainless steel for rings and balls, combined with a brass cage, offers excellent corrosion resistance and durability, suitable for a wide temperature range (-30°C to 110°C).
- Optimized Design: The Reali-Slim cross-section (0.75" width) minimizes weight (5.2 lbs) and space requirements without compromising on load capacity or performance, making it ideal for compact, high-performance mechanisms.
SF120AR0 Bearing Typical Application Areas
- Robotics & Automation: Precision joints, rotary actuators, and manipulator arms requiring high moment load capacity (49,380 lbf-in).
- Aerospace & Defense: Gimbals, radar platforms, and guidance systems where corrosion resistance and reliability are critical.
- Medical Equipment: CT scanners, MRI systems, and surgical robots demanding smooth, precise motion and stainless steel cleanliness.
- Semiconductor Manufacturing: Wafer handling robots and precision stages that benefit from the bearing's high rigidity and accuracy.
